Table of Contents

System Price Format

T4 publishes prices in two formats: Decimal (default) and Real. The setting controls only decimal placement on all prices, including chart data and API/FIX responses.

If you expect ES to look like 5954.75 instead of 595475, choose Real.

Formats

Format Description Example (ES)
Real Human-readable decimal placement used by most trading UIs. 
5954.75
Decimal (default) Raw exchange representation, without UI-friendly decimal placement. 
595475

Where it applies

Set format during login

Streaming API (gRPC)

var loginRequest = new T4Proto.V1.Auth.LoginRequest {
    Firm        = demoConfig.Firm,
    Username    = demoConfig.UserName,
    Password    = demoConfig.Password,
    AppName     = demoConfig.AppName,
    AppLicense  = demoConfig.AppLicense,
    PriceFormat = T4Proto.V1.Common.PriceFormat.Real
};

REST

Option 1 — Use bearer token from Streaming API\ If you authenticate via Streaming and reuse that bearer token, the price format is already set. No additional REST setup is required.

Option 2 — /login endpoint\ Specify priceFormat in the request body: 

{
  "firm": "CTSDev",
  "userName": "user",
  "password": "*****",
  "appName": "TradeBook",
  "appLicense": "F18CC97E-42D1-478A-8CE9-0A850B5C47A7",
  "priceFormat": "Real"
}

FIX API

For FIX, price format is selected on the LOGON [35=A] message using the RefMsgType session property group:

To control price format, include a RefMsgType value of:

Example LOGON with Real pricing: 

8=FIX.4.2|9=200|35=A|49=T4Example|56=T4|52=20250101-12:00:00.000|
91=112A04B0-5AAF-42F4-994E-FA7CB959C60B|90=36|98=0|108=30|
553=username|554=password|384=1|372=RD|10=123|

Example LOGON with Decimal pricing: 

8=FIX.4.2|9=200|35=A|49=T4Example|56=T4|52=20250101-12:00:00.000|
91=112A04B0-5AAF-42F4-994E-FA7CB959C60B|90=36|98=0|108=30|
553=username|554=password|384=1|372=D|10=123|

Notes